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Cel mai inteligent răspuns!
2014-05-02T17:40:43+03:00
4a+3b-c-5a+6b+4c-2a+7b+3c=-7a+4a +16b+7c-c= -3a+ 16b+6c
2014-05-02T17:42:18+03:00
4a+3b-c-5a+6b+4c-2a+7b+3c=0
-3a+16b+6c=0
parca asa eu nustiu mai departe